You will need to drain your fuel tank to a safe level (less than 1/4 tank) Then remove the fuel tank from the vehicle taking special care to disconnect anything connected to the tank as you lower it. There are lines and wires connected to the tank and the manufacturer does not give you alot of room to work on these. Once you get the tank down you may need a special tool to remove the fuel pump module lock ring. With lots of care and a pair of large channel-lock pliers and a large screwdriver I have removed many of these lock rings. Its a little more difficult to replace, but it is do-able. Then just reverse the removal procedure.
Hope this helps ya,
Billy